Differential Bearing Preload Measurement and Adjustment

Bearing Adjustment Procedures

Take extreme care when removing and installing bearing cups and cones. Use only an arbor press for installation, as a hammer may not properly align the bearing cup or cone. Burrs or nicks on the bearing seat will give a false end play reading, while gauging for proper shims. Improperly seated bearing cup and cones are subject to low-mileage failure.

Bearing cups and cones should be replaced if they show signs of pitting or heat distress.

If distress is seen on either the cup or bearing rollers, both cup and cone must be replaced.

NOTE: Bearing end play and drag torque specifications must be maintained to avoid premature bearing failures.

Used (original) bearing may lose up to 50 percent of the original drag torque after break-in.

NOTE: All bearing adjustments must be made with no other component interference or gear inter-mesh, except the transfer gear bearing.

Oil all bearings before checking turning torque.

Master Shim Chart

Use this chart as a reference guide when selecting the shims needed for the:

Master Shim Chart - Transfer Shaft Rear Shims:

Master Shim Chart - Output Shaft Rear Shims:

Master Shim Chart - Output Sprocket Spacer Shims:

Master Shim Chart - Pinion Head Shims: